Can k4 and k2,3 be drawn in the plane in such a way that all the vertices are on the exterior boundary (i. e. touching the infinite face)? show your reasoning.

Asquare picture with sides of 32 inches is to be mounted on a square mat with sides of 52 inches. find the area of the mat that will remain uncovered by the picture.

Abird on top of a 200 ft bridge tower sees a man standing on the lower part of the bridge (which is 50 ft above the ground). the angle of depression from the bird is 26 ̊. how far is the man from the base of the bridge tower? with explanation and pictures .

50 points~ ! i have to turn this in tomarrow